Nex 5n + Vivitar Telephoto + vivitar 2x coverter

I am very new to the ICL camera world (using Nex 5n for just a month) , but started out experimenting with legacy lenses pretty early.

Just received my Vivitar 300mm 5.6 (Nikon mount) and Vivitar 2x multiplier (Nikon mount), but am still waiting for the adapter to my camera. Well long story short...its full moon, and the sky was relativly clear, so I connected my canon adapter, held the lens with the extender in front, and snapped away. Here is one strait out of the camera with only 22 points contrast adjustment in office photo viewer. Please let me know your thoughts...:)